summaryrefslogtreecommitdiff
path: root/contrib/examples/git-merge.sh
diff options
context:
space:
mode:
authorÆvar Arnfjörð Bjarmason <avarab@gmail.com>2018-03-25 20:46:53 (GMT)
committerJunio C Hamano <gitster@pobox.com>2018-03-26 20:48:50 (GMT)
commit49eb8d39c78f161231e63293df60f343d208f409 (patch)
tree877abb15a47d8f0185fffa0103f78a66382a02e9 /contrib/examples/git-merge.sh
parent90bbd502d54fe920356fa9278055dc9c9bfe9a56 (diff)
downloadgit-49eb8d39c78f161231e63293df60f343d208f409.zip
git-49eb8d39c78f161231e63293df60f343d208f409.tar.gz
git-49eb8d39c78f161231e63293df60f343d208f409.tar.bz2
Remove contrib/examples/*
There were some side discussions at Git Merge this year about how we should just update the README to tell users they can dig these up from the history if the need them, do that. Looking at the "git log" for this directory we get quite a bit more patch churn than we should here, mainly from things fixing various tree-wide issues. There's also confusion on the list occasionally about how these should be treated, "Re: [PATCH 1/4] stash: convert apply to builtin" (<CA+CzEk9QpmHK_TSBwQfEedNqrcVSBp3xY7bdv1YA_KxePiFeXw@mail.gmail.com>) being the latest example of that. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'contrib/examples/git-merge.sh')
-rwxr-xr-xcontrib/examples/git-merge.sh620
1 files changed, 0 insertions, 620 deletions
diff --git a/contrib/examples/git-merge.sh b/contrib/examples/git-merge.sh
deleted file mode 100755
index 932e78d..0000000
--- a/contrib/examples/git-merge.sh
+++ /dev/null
@@ -1,620 +0,0 @@
-#!/bin/sh
-#
-# Copyright (c) 2005 Junio C Hamano
-#
-
-OPTIONS_KEEPDASHDASH=
-OPTIONS_SPEC="\
-git merge [options] <remote>...
-git merge [options] <msg> HEAD <remote>
---
-stat show a diffstat at the end of the merge
-n don't show a diffstat at the end of the merge
-summary (synonym to --stat)
-log add list of one-line log to merge commit message
-squash create a single commit instead of doing a merge
-commit perform a commit if the merge succeeds (default)
-ff allow fast-forward (default)
-ff-only abort if fast-forward is not possible
-rerere-autoupdate update index with any reused conflict resolution
-s,strategy= merge strategy to use
-X= option for selected merge strategy
-m,message= message to be used for the merge commit (if any)
-"
-
-SUBDIRECTORY_OK=Yes
-. git-sh-setup
-require_work_tree
-cd_to_toplevel
-
-test -z "$(git ls-files -u)" ||
- die "Merge is not possible because you have unmerged files."
-
-! test -e "$GIT_DIR/MERGE_HEAD" ||
- die 'You have not concluded your merge (MERGE_HEAD exists).'
-
-LF='
-'
-
-all_strategies='recur recursive octopus resolve stupid ours subtree'
-all_strategies="$all_strategies recursive-ours recursive-theirs"
-not_strategies='base file index tree'
-default_twohead_strategies='recursive'
-default_octopus_strategies='octopus'
-no_fast_forward_strategies='subtree ours'
-no_trivial_strategies='recursive recur subtree ours recursive-ours recursive-theirs'
-use_strategies=
-xopt=
-
-allow_fast_forward=t
-fast_forward_only=
-allow_trivial_merge=t
-squash= no_commit= log_arg= rr_arg=
-
-dropsave() {
- rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
- "$GIT_DIR/MERGE_STASH" "$GIT_DIR/MERGE_MODE" || exit 1
-}
-
-savestate() {
- # Stash away any local modifications.
- git stash create >"$GIT_DIR/MERGE_STASH"
-}
-
-restorestate() {
- if test -f "$GIT_DIR/MERGE_STASH"
- then
- git reset --hard $head >/dev/null
- git stash apply $(cat "$GIT_DIR/MERGE_STASH")
- git update-index --refresh >/dev/null
- fi
-}
-
-finish_up_to_date () {
- case "$squash" in
- t)
- echo "$1 (nothing to squash)" ;;
- '')
- echo "$1" ;;
- esac
- dropsave
-}
-
-squash_message () {
- echo Squashed commit of the following:
- echo
- git log --no-merges --pretty=medium ^"$head" $remoteheads
-}
-
-finish () {
- if test '' = "$2"
- then
- rlogm="$GIT_REFLOG_ACTION"
- else
- echo "$2"
- rlogm="$GIT_REFLOG_ACTION: $2"
- fi
- case "$squash" in
- t)
- echo "Squash commit -- not updating HEAD"
- squash_message >"$GIT_DIR/SQUASH_MSG"
- ;;
- '')
- case "$merge_msg" in
- '')
- echo "No merge message -- not updating HEAD"
- ;;
- *)
- git update-ref -m "$rlogm" HEAD "$1" "$head" || exit 1
- git gc --auto
- ;;
- esac
- ;;
- esac
- case "$1" in
- '')
- ;;
- ?*)
- if test "$show_diffstat" = t
- then
- # We want color (if set), but no pager
- GIT_PAGER='' git diff --stat --summary -M "$head" "$1"
- fi
- ;;
- esac
-
- # Run a post-merge hook
- if test -x "$GIT_DIR"/hooks/post-merge
- then
- case "$squash" in
- t)
- "$GIT_DIR"/hooks/post-merge 1
- ;;
- '')
- "$GIT_DIR"/hooks/post-merge 0
- ;;
- esac
- fi
-}
-
-merge_name () {
- remote="$1"
- rh=$(git rev-parse --verify "$remote^0" 2>/dev/null) || return
- if truname=$(expr "$remote" : '\(.*\)~[0-9]*$') &&
- git show-ref -q --verify "refs/heads/$truname" 2>/dev/null
- then
- echo "$rh branch '$truname' (early part) of ."
- return
- fi
- if found_ref=$(git rev-parse --symbolic-full-name --verify \
- "$remote" 2>/dev/null)
- then
- expanded=$(git check-ref-format --branch "$remote") ||
- exit
- if test "${found_ref#refs/heads/}" != "$found_ref"
- then
- echo "$rh branch '$expanded' of ."
- return
- elif test "${found_ref#refs/remotes/}" != "$found_ref"
- then
- echo "$rh remote branch '$expanded' of ."
- return
- fi
- fi
- if test "$remote" = "FETCH_HEAD" && test -r "$GIT_DIR/FETCH_HEAD"
- then
- sed -e 's/ not-for-merge / /' -e 1q \
- "$GIT_DIR/FETCH_HEAD"
- return
- fi
- echo "$rh commit '$remote'"
-}
-
-parse_config () {
- while test $# != 0; do
- case "$1" in
- -n|--no-stat|--no-summary)
- show_diffstat=false ;;
- --stat|--summary)
- show_diffstat=t ;;
- --log|--no-log)
- log_arg=$1 ;;
- --squash)
- test "$allow_fast_forward" = t ||
- die "You cannot combine --squash with --no-ff."
- squash=t no_commit=t ;;
- --no-squash)
- squash= no_commit= ;;
- --commit)
- no_commit= ;;
- --no-commit)
- no_commit=t ;;
- --ff)
- allow_fast_forward=t ;;
- --no-ff)
- test "$squash" != t ||
- die "You cannot combine --squash with --no-ff."
- test "$fast_forward_only" != t ||
- die "You cannot combine --ff-only with --no-ff."
- allow_fast_forward=f ;;
- --ff-only)
- test "$allow_fast_forward" != f ||
- die "You cannot combine --ff-only with --no-ff."
- fast_forward_only=t ;;
- --rerere-autoupdate|--no-rerere-autoupdate)
- rr_arg=$1 ;;
- -s|--strategy)
- shift
- case " $all_strategies " in
- *" $1 "*)
- use_strategies="$use_strategies$1 "
- ;;
- *)
- case " $not_strategies " in
- *" $1 "*)
- false
- esac &&
- type "git-merge-$1" >/dev/null 2>&1 ||
- die "available strategies are: $all_strategies"
- use_strategies="$use_strategies$1 "
- ;;
- esac
- ;;
- -X)
- shift
- xopt="${xopt:+$xopt }$(git rev-parse --sq-quote "--$1")"
- ;;
- -m|--message)
- shift
- merge_msg="$1"
- have_message=t
- ;;
- --)
- shift
- break ;;
- *) usage ;;
- esac
- shift
- done
- args_left=$#
-}
-
-test $# != 0 || usage
-
-have_message=
-
-if branch=$(git-symbolic-ref -q HEAD)
-then
- mergeopts=$(git config "branch.${branch#refs/heads/}.mergeoptions")
- if test -n "$mergeopts"
- then
- parse_config $mergeopts --
- fi
-fi
-
-parse_config "$@"
-while test $args_left -lt $#; do shift; done
-
-if test -z "$show_diffstat"; then
- test "$(git config --bool merge.diffstat)" = false && show_diffstat=false
- test "$(git config --bool merge.stat)" = false && show_diffstat=false
- test -z "$show_diffstat" && show_diffstat=t
-fi
-
-# This could be traditional "merge <msg> HEAD <commit>..." and the
-# way we can tell it is to see if the second token is HEAD, but some
-# people might have misused the interface and used a commit-ish that
-# is the same as HEAD there instead. Traditional format never would
-# have "-m" so it is an additional safety measure to check for it.
-
-if test -z "$have_message" &&
- second_token=$(git rev-parse --verify "$2^0" 2>/dev/null) &&
- head_commit=$(git rev-parse --verify "HEAD" 2>/dev/null) &&
- test "$second_token" = "$head_commit"
-then
- merge_msg="$1"
- shift
- head_arg="$1"
- shift
-elif ! git rev-parse --verify HEAD >/dev/null 2>&1
-then
- # If the merged head is a valid one there is no reason to
- # forbid "git merge" into a branch yet to be born. We do
- # the same for "git pull".
- if test 1 -ne $#
- then
- echo >&2 "Can merge only exactly one commit into empty head"
- exit 1
- fi
-
- test "$squash" != t ||
- die "Squash commit into empty head not supported yet"
- test "$allow_fast_forward" = t ||
- die "Non-fast-forward into an empty head does not make sense"
- rh=$(git rev-parse --verify "$1^0") ||
- die "$1 - not something we can merge"
-
- git update-ref -m "initial pull" HEAD "$rh" "" &&
- git read-tree --reset -u HEAD
- exit
-
-else
- # We are invoked directly as the first-class UI.
- head_arg=HEAD
-
- # All the rest are the commits being merged; prepare
- # the standard merge summary message to be appended to
- # the given message. If remote is invalid we will die
- # later in the common codepath so we discard the error
- # in this loop.
- merge_msg="$(
- for remote
- do
- merge_name "$remote"
- done |
- if test "$have_message" = t
- then
- git fmt-merge-msg -m "$merge_msg" $log_arg
- else
- git fmt-merge-msg $log_arg
- fi
- )"
-fi
-head=$(git rev-parse --verify "$head_arg"^0) || usage
-
-# All the rest are remote heads
-test "$#" = 0 && usage ;# we need at least one remote head.
-set_reflog_action "merge $*"
-
-remoteheads=
-for remote
-do
- remotehead=$(git rev-parse --verify "$remote"^0 2>/dev/null) ||
- die "$remote - not something we can merge"
- remoteheads="${remoteheads}$remotehead "
- eval GITHEAD_$remotehead='"$remote"'
- export GITHEAD_$remotehead
-done
-set x $remoteheads ; shift
-
-case "$use_strategies" in
-'')
- case "$#" in
- 1)
- var="$(git config --get pull.twohead)"
- if test -n "$var"
- then
- use_strategies="$var"
- else
- use_strategies="$default_twohead_strategies"
- fi ;;
- *)
- var="$(git config --get pull.octopus)"
- if test -n "$var"
- then
- use_strategies="$var"
- else
- use_strategies="$default_octopus_strategies"
- fi ;;
- esac
- ;;
-esac
-
-for s in $use_strategies
-do
- for ss in $no_fast_forward_strategies
- do
- case " $s " in
- *" $ss "*)
- allow_fast_forward=f
- break
- ;;
- esac
- done
- for ss in $no_trivial_strategies
- do
- case " $s " in
- *" $ss "*)
- allow_trivial_merge=f
- break
- ;;
- esac
- done
-done
-
-case "$#" in
-1)
- common=$(git merge-base --all $head "$@")
- ;;
-*)
- common=$(git merge-base --all --octopus $head "$@")
- ;;
-esac
-echo "$head" >"$GIT_DIR/ORIG_HEAD"
-
-case "$allow_fast_forward,$#,$common,$no_commit" in
-?,*,'',*)
- # No common ancestors found. We need a real merge.
- ;;
-?,1,"$1",*)
- # If head can reach all the merge then we are up to date.
- # but first the most common case of merging one remote.
- finish_up_to_date "Already up to date."
- exit 0
- ;;
-t,1,"$head",*)
- # Again the most common case of merging one remote.
- echo "Updating $(git rev-parse --short $head)..$(git rev-parse --short $1)"
- git update-index --refresh 2>/dev/null
- msg="Fast-forward"
- if test -n "$have_message"
- then
- msg="$msg (no commit created; -m option ignored)"
- fi
- new_head=$(git rev-parse --verify "$1^0") &&
- git read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
- finish "$new_head" "$msg" || exit
- dropsave
- exit 0
- ;;
-?,1,?*"$LF"?*,*)
- # We are not doing octopus and not fast-forward. Need a
- # real merge.
- ;;
-?,1,*,)
- # We are not doing octopus, not fast-forward, and have only
- # one common.
- git update-index --refresh 2>/dev/null
- case "$allow_trivial_merge,$fast_forward_only" in
- t,)
- # See if it is really trivial.
- git var GIT_COMMITTER_IDENT >/dev/null || exit
- echo "Trying really trivial in-index merge..."
- if git read-tree --trivial -m -u -v $common $head "$1" &&
- result_tree=$(git write-tree)
- then
- echo "Wonderful."
- result_commit=$(
- printf '%s\n' "$merge_msg" |
- git commit-tree $result_tree -p HEAD -p "$1"
- ) || exit
- finish "$result_commit" "In-index merge"
- dropsave
- exit 0
- fi
- echo "Nope."
- esac
- ;;
-*)
- # An octopus. If we can reach all the remote we are up to date.
- up_to_date=t
- for remote
- do
- common_one=$(git merge-base --all $head $remote)
- if test "$common_one" != "$remote"
- then
- up_to_date=f
- break
- fi
- done
- if test "$up_to_date" = t
- then
- finish_up_to_date "Already up to date. Yeeah!"
- exit 0
- fi
- ;;
-esac
-
-if test "$fast_forward_only" = t
-then
- die "Not possible to fast-forward, aborting."
-fi
-
-# We are going to make a new commit.
-git var GIT_COMMITTER_IDENT >/dev/null || exit
-
-# At this point, we need a real merge. No matter what strategy
-# we use, it would operate on the index, possibly affecting the
-# working tree, and when resolved cleanly, have the desired tree
-# in the index -- this means that the index must be in sync with
-# the $head commit. The strategies are responsible to ensure this.
-
-case "$use_strategies" in
-?*' '?*)
- # Stash away the local changes so that we can try more than one.
- savestate
- single_strategy=no
- ;;
-*)
- rm -f "$GIT_DIR/MERGE_STASH"
- single_strategy=yes
- ;;
-esac
-
-result_tree= best_cnt=-1 best_strategy= wt_strategy=
-merge_was_ok=
-for strategy in $use_strategies
-do
- test "$wt_strategy" = '' || {
- echo "Rewinding the tree to pristine..."
- restorestate
- }
- case "$single_strategy" in
- no)
- echo "Trying merge strategy $strategy..."
- ;;
- esac
-
- # Remember which strategy left the state in the working tree
- wt_strategy=$strategy
-
- eval 'git-merge-$strategy '"$xopt"' $common -- "$head_arg" "$@"'
- exit=$?
- if test "$no_commit" = t && test "$exit" = 0
- then
- merge_was_ok=t
- exit=1 ;# pretend it left conflicts.
- fi
-
- test "$exit" = 0 || {
-
- # The backend exits with 1 when conflicts are left to be resolved,
- # with 2 when it does not handle the given merge at all.
-
- if test "$exit" -eq 1
- then
- cnt=$({
- git diff-files --name-only
- git ls-files --unmerged
- } | wc -l)
- if test $best_cnt -le 0 || test $cnt -le $best_cnt
- then
- best_strategy=$strategy
- best_cnt=$cnt
- fi
- fi
- continue
- }
-
- # Automerge succeeded.
- result_tree=$(git write-tree) && break
-done
-
-# If we have a resulting tree, that means the strategy module
-# auto resolved the merge cleanly.
-if test '' != "$result_tree"
-then
- if test "$allow_fast_forward" = "t"
- then
- parents=$(git merge-base --independent "$head" "$@")
- else
- parents=$(git rev-parse "$head" "$@")
- fi
- parents=$(echo "$parents" | sed -e 's/^/-p /')
- result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
- finish "$result_commit" "Merge made by $wt_strategy."
- dropsave
- exit 0
-fi
-
-# Pick the result from the best strategy and have the user fix it up.
-case "$best_strategy" in
-'')
- restorestate
- case "$use_strategies" in
- ?*' '?*)
- echo >&2 "No merge strategy handled the merge."
- ;;
- *)
- echo >&2 "Merge with strategy $use_strategies failed."
- ;;
- esac
- exit 2
- ;;
-"$wt_strategy")
- # We already have its result in the working tree.
- ;;
-*)
- echo "Rewinding the tree to pristine..."
- restorestate
- echo "Using the $best_strategy to prepare resolving by hand."
- git-merge-$best_strategy $common -- "$head_arg" "$@"
- ;;
-esac
-
-if test "$squash" = t
-then
- finish
-else
- for remote
- do
- echo $remote
- done >"$GIT_DIR/MERGE_HEAD"
- printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG" ||
- die "Could not write to $GIT_DIR/MERGE_MSG"
- if test "$allow_fast_forward" != t
- then
- printf "%s" no-ff
- else
- :
- fi >"$GIT_DIR/MERGE_MODE" ||
- die "Could not write to $GIT_DIR/MERGE_MODE"
-fi
-
-if test "$merge_was_ok" = t
-then
- echo >&2 \
- "Automatic merge went well; stopped before committing as requested"
- exit 0
-else
- {
- echo '
-Conflicts:
-'
- git ls-files --unmerged |
- sed -e 's/^[^ ]* / /' |
- uniq
- } >>"$GIT_DIR/MERGE_MSG"
- git rerere $rr_arg
- die "Automatic merge failed; fix conflicts and then commit the result."
-fi